I know you can t go from sp1 to rtm and i haven t tried going from rtm to sp1 but i suspect it won t work.
Windows 7 pro upgrade to windows 7 enterprise.
The license cannot be downgraded even with sa.
How the free upgrade works.
If you have windows volume licenses with software assurance or if you have purchased windows 10 enterprise volume licenses you can download 32 bit and 64 bit versions of windows 10 enterprise from the volume licensing service center if you do not have current software assurance for windows and would like to purchase volume licenses for.
I think the problem that prevents the upgrade from working at times is dependent on how long sp1 has been applied.
Windows 7 enterprise is very specifically excluded from the free upgrade to windows 10.
The license cannot be downgraded even with sa.
Command to change to a new edition of windows.
Assuming you re using a windows pc with a genuine and activated windows 7 or windows 8 key you can upgrade to windows 10 in just a few clicks.
I ve successfully been able to upgrade 7 pro to 7 enterprise and 7 pro sp1 to 7 enterprise sp1.
Microsoft previously offered windows 7 ultimate which contained all the same features as the enterprise versions of windows but there s nothing like that for windows 10.
Windows 7 enterprise and windows 8 8 1 enterprise are not included in the terms of free windows 10 upgrade offer we announced last week given active software assurance customers will continue to have rights to upgrade to windows 10 enterprise offerings outside of this offer while also benefitting from the full flexibility to deploy windows.
Hi mizhda free upgrade for windows 10 has stopped.
According to microsoft s documentation it s possible to use the dism online set edition.
However assuming proper license i d imagine you d upgrade to 10 enterprise.